We offer a 30-day free return policy, with refund or replacement available on eligible items in
their original condition. Used, damaged, or significantly different items may not qualify for a full
refund. For more information, please refer to our
return policy.
Frequently Bought Together
Frequently Bought Together
Description
Magnesium might not get as much attention as calcium, but it is just as important for a thriving reef tank. In natural seawater, it’s found in high levels and plays a big role in photosynthesis since it is part of chlorophyll. Without it, plants, algae, and corals would struggle to survive.
This Salifert Magnesium Profi-Test Kit slows the build-up of calcium carbonate, which can otherwise trap important trace elements. Keeping magnesium in check means healthier corals and faster growth for calcareous algae.
Levels can drop as algae grows or if you use too much kalkwasser, so testing regularly makes a big difference. The salifert test kit makes that easy with simple steps and accurate results in increments of thirty milligrams per liter. Calcium and strontium won’t interfere within normal ranges, so you get clear and reliable results every time. Perfect for marine tanks where the balance of the fish tank water test kit is everything.
Key Benefits
Accurately measures magnesium levels to keep aquariums balanced and healthy.
Supports coral, algae, and plant growth by maintaining essential photosynthesis.
Helps stabilize calcium and alkalinity for stronger reef development.
Easy-to-use kit gives quick and dependable results without complex steps.
Ensures thriving marine life by preventing hidden nutrient imbalances.
Show More +
INGREDIENTS ANALYSIS
Liquid
Attributes & Specifications
Target Measurement
Magnesium concentration
Suitable For
Marine aquariums
Application
Magnesium level monitoring
safety & precautions
Avoid contact with skin and eyes; rinse immediately with water if contact occurs.
Keep out of reach of children.
Use in a well-ventilated area.
Store reagents in a cool, dry place away from direct sunlight.
Follow manufacturer instructions carefully to avoid inaccurate readings.
DIRECTIONS FOR USE
Measure 25 mL of tank water into the test container.
Add the recommended drops of reagent 1 and mix well.
Add reagent 2 drop by drop while swirling until the color changes.
Count the drops used and follow the chart to find magnesium levels.
Recently Viewed
Frequently Asked Questions
Why is magnesium such a big deal in reef tanks?
+
Think of magnesium as the unsung hero. It keeps calcium and alkalinity from fighting each other and gives corals the backbone they need to grow. Skip it, and your reef can wobble fast.
How often should magnesium be tested?
+
Most reef folks give it a check once a week, or whenever they tweak dosing. Staying on top of it keeps coral growth steady and avoids those “why is nothing thriving?” surprises.
Will calcium or strontium mess with the test results?
+
Nope. As long as they’re in normal ranges, they won’t throw the numbers off. The kit is built to stay accurate even with those guys hanging around.
How fast can results be seen with this salifert test kit?
+
Pretty quick, mix, swirl, and within a couple of minutes you’ll see a clear color shift. Each step reads in 30 mg/L jumps, so you know exactly where your levels sit.
How many tests are included in Salifert Magnesium Profi-Test Kit?
+
About 50. That’s months of reef-watching before you’ll need to restock. Plenty of chances to stay ahead of any magnesium dips.